CHORE: Added JBey's required API server methods along with the required imports for lesson_26

lesson_26/api/java/api_app/src/main/java/com/codedifferently/lesson26/web/MediaItemsController.java

@@ -4,12 +4,17 @@
 import com.codedifferently.lesson26.library.Library;
 import com.codedifferently.lesson26.library.MediaItem;
 import com.codedifferently.lesson26.library.search.SearchCriteria;
+import jakarta.validation.Valid;
 import java.io.IOException;
 import java.util.List;
 import java.util.Set;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
@@ -24,11 +29,53 @@ public MediaItemsController(Library library) throws IOException {
     this.librarian = library.getLibrarians().stream().findFirst().orElseThrow();
   }
 
+  // Gets all media items.
+
   @GetMapping("/items")
   public ResponseEntity<GetMediaItemsResponse> getItems() {
     Set<MediaItem> items = library.search(SearchCriteria.builder().build());
     List<MediaItemResponse> responseItems = items.stream().map(MediaItemResponse::from).toList();
     var response = GetMediaItemsResponse.builder().items(responseItems).build();
     return ResponseEntity.ok(response);
   }
+
+  //
+
+  @DeleteMapping("/items/{id}")
+  public ResponseEntity<Void> deleteItem(@PathVariable String id) {
+    Set<MediaItem> items = library.search(SearchCriteria.builder().id(id).build());
+    if (items.isEmpty()) {
+      return ResponseEntity.notFound().build(); // Return 404 if item is not found
+    }
+    MediaItem itemToDelete = items.iterator().next();
+    library.removeMediaItem(
+        itemToDelete, librarian); // Assuming there's a method to remove items in the library
+    return ResponseEntity.noContent().build(); // Return 204 No Content if deletion is successful
+  }
+
+  //
+
+  @GetMapping("/items/{id}")
+  public ResponseEntity<MediaItemResponse> getItem(@PathVariable String id) {
+    Set<MediaItem> items = library.search(SearchCriteria.builder().id(id).build());
+    if (items.isEmpty()) {
+      return ResponseEntity.notFound().build(); // Return 404 if item is not found
+    }
+    MediaItem item = items.iterator().next();
+    MediaItemResponse response = MediaItemResponse.from(item);
+    return ResponseEntity.ok(response);
+  }
+
+  //
+
+  @PostMapping("/items")
+  public ResponseEntity<CreateMediaItemResponse> createItem(
+      @Valid @RequestBody CreateMediaItemRequest createRequest) {
+    MediaItemRequest itemRequest = createRequest.getItem();
+    MediaItem newItem = MediaItemRequest.asMediaItem(itemRequest);
+    library.addMediaItem(newItem, this.librarian);
+    MediaItemResponse itemResponse = MediaItemResponse.from(newItem);
+    CreateMediaItemResponse response = CreateMediaItemResponse.builder().item(itemResponse).build();
+    return ResponseEntity.ok(response);
+  }
 }